export class DataSource  {
    constructor() {
        return {
            "items":[{
                "id":1,
                "postId":2,
                "content":"这是评论的内容1。。。",
                "date":"2016-09-06 10:00:09",
                "username":"lomo"
            },{
                "id":2,
                "postId":3,
                "content":"这是评论的内容2。。。",
                "date":"2016-09-07 11:00:09",
                "username":"lomo2"
            },{
                "id":3,
                "postId":4,
                "content":"这是评论的内容3。。。",
                "date":"2016-09-08 12:00:09",
                "username":"lomo3"
            }]
        }
    }
}